erlexec requires HOME to be set [JIRA: RIAK-1959]

[sargun]

erlexec requires the HOME variable to be set.

sargun@ubuntu:/tmp/mesos/slaves/20150712-141616-35725601-5050-4054-S0/frameworks/riak-mesos-go3/executors/test-cluster-c16260e2-21d0-44f3-9139-59b3b0a05948-2465/runs/latest$ unset HOME
sargun@ubuntu:/tmp/mesos/slaves/20150712-141616-35725601-5050-4054-S0/frameworks/riak-mesos-go3/executors/test-cluster-c16260e2-21d0-44f3-9139-59b3b0a05948-2465/runs/latest/riak/bin$ ./riak config generate -l debug
erlexec: HOME must be set

The way that this manifests itself during normal Riak startups, if $HOME isn't set:

=====
===== LOGGING STARTED Sun Jul 12 14:36:54 PDT 2015
=====
erlexec: HOME must be set
Error generating config with cuttlefish
  run `riak config generate -l debug` for more information.

Can we automatically set $HOME, if it's not set already?

[drewkerrigan]

The code that generates this error is in node_package's env.sh: https://github.com/basho/node_package/blob/develop/priv/base/env.sh#L285

I created a PR which should address the situation of an unset HOME: basho/node_package#185

But it can also be patched into riak/lib/env.sh if you need it for now.

[drewkerrigan]

/Users/dkerrigan/src/basho/riak-2.1.1 » unset HOME
/Users/dkerrigan/src/basho/riak-2.1.1 » ./bin/riak chkconfig
config is OK
-config /Users/dkerrigan/src/basho/riak-2.1.1/data/generated.configs/app.2015.07.12.22.22.04.config -args_file /Users/dkerrigan/src/basho/riak-2.1.1/data/generated.configs/vm.2015.07.12.22.22.04.args -vm_args /Users/dkerrigan/src/basho/riak-2.1.1/data/generated.configs/vm.2015.07.12.22.22.04.args
/Users/dkerrigan/src/basho/riak-2.1.1 » ./bin/riak config generate -l debug
22:23:22.947 [debug] Lager installed handler error_logger_lager_h into error_logger
22:23:22.952 [debug] Supervisor gr_param_sup started gr_param:start_link(gr_lager_default_tracer_params) at pid <0.52.0>
22:23:22.952 [debug] Supervisor gr_counter_sup started gr_counter:start_link(gr_lager_default_tracer_counters) at pid <0.53.0>
22:23:22.952 [debug] Supervisor gr_manager_sup started gr_manager:start_link(gr_lager_default_tracer_params_mgr, gr_lager_default_tracer_params, []) at pid <0.54.0>
22:23:22.952 [debug] Supervisor gr_manager_sup started gr_manager:start_link(gr_lager_default_tracer_counters_mgr, gr_lager_default_tracer_counters, [{input,0},{filter,0},{output,0}]) at pid <0.55.0>
22:23:23.154 [debug] Cuttlefish set to debug level logging
22:23:23.154 [info] Application lager started on node nonode@nohost
22:23:23.154 [info] Checking /Users/dkerrigan/src/basho/riak-2.1.1/bin/../etc/app.config exists... false
22:23:23.155 [info] Checking /Users/dkerrigan/src/basho/riak-2.1.1/bin/../etc/vm.args exists... false
22:23:23.155 [info] No app.config or vm.args detected in /Users/dkerrigan/src/basho/riak-2.1.1/bin/../etc, activating cuttlefish
22:23:23.155 [debug] Generating config in: "/Users/dkerrigan/src/basho/riak-2.1.1/data/generated.configs/app.2015.07.12.22.23.23.config"
22:23:23.155 [debug] SchemaFiles: ["/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/10-riak.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/11-erlang_vm.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/12-riak_core.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/13-riak_api.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/14-riak_kv.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/15-riak_sysmon.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/16-bitcask.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/17-bitcask_multi.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/18-riak_control.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/20-multi_backend.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/21-leveldb.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/22-leveldb_multi.schema","/Users/dkerrigan/src/basho/riak-2.1.1/bin/../lib/30-yokozuna.schema"]
22:23:23.225 [debug] ConfFiles: ["/Users/dkerrigan/src/basho/riak-2.1.1/bin/../etc/riak.conf"]
22:23:23.304 [debug] Adding Defaults
22:23:23.305 [debug] Right Hand Side Substitutions
22:23:23.305 [debug] Applying Datatypes
22:23:23.323 [debug] Validation
22:23:23.326 [debug] Applied 1:1 Mappings
22:23:23.326 [debug] Running translation for lager.handlers
22:23:23.326 [debug] Running translation for lager.crash_log
22:23:23.326 [debug] Running translation for lager.crash_log_count
22:23:23.326 [debug] "vm_args.+S" in Translations to drop...
22:23:23.326 [debug] "vm_args.+a" in Translations to drop...
22:23:23.326 [debug] Running translation for vm_args.+zdbbl
22:23:23.326 [debug] Running translation for riak_api.http
22:23:23.326 [debug] Running translation for riak_api.pb
22:23:23.326 [debug] "riak_api.https" in Translations to drop...
22:23:23.327 [debug] Running translation for riak_api.honor_cipher_order
22:23:23.327 [debug] Running translation for riak_api.tls_protocols
22:23:23.327 [debug] Running translation for riak_api.check_crl
22:23:23.327 [debug] Running translation for riak_kv.anti_entropy
22:23:23.327 [debug] Running translation for riak_kv.storage_backend
22:23:23.327 [debug] Running translation for riak_kv.anti_entropy_build_limit
22:23:23.327 [debug] "riak_kv.aae_throttle_limits" in Translations to drop...
22:23:23.327 [debug] Running translation for riak_kv.js_max_vm_mem
22:23:23.327 [debug] Running translation for riak_kv.js_thread_stack
22:23:23.327 [debug] Running translation for riak_kv.fsm_limit
22:23:23.328 [debug] Running translation for riak_kv.object_format
22:23:23.328 [debug] Running translation for riak_kv.vnode_md_cache_size
22:23:23.328 [debug] "riak_kv.memory_backend.max_memory" in Translations to drop...
22:23:23.328 [debug] "riak_core.default_bucket_props.precommit" in Translations to drop...
22:23:23.328 [debug] "riak_core.default_bucket_props.postcommit" in Translations to drop...
22:23:23.328 [debug] Running translation for riak_sysmon.gc_ms_limit
22:23:23.328 [debug] Running translation for riak_sysmon.schedule_ms_limit
22:23:23.328 [debug] Running translation for riak_sysmon.heap_word_limit
22:23:23.328 [debug] Running translation for bitcask.sync_strategy
22:23:23.328 [debug] Running translation for bitcask.merge_window
22:23:23.328 [debug] Running translation for bitcask.max_fold_age
22:23:23.328 [debug] Running translation for bitcask.max_fold_puts
22:23:23.328 [debug] Running translation for bitcask.expiry_secs
22:23:23.329 [debug] Running translation for bitcask.require_hint_crc
22:23:23.329 [debug] Running translation for riak_control.auth
22:23:23.329 [debug] "riak_control.userlist" in Translations to drop...
22:23:23.329 [debug] "riak_kv.multi_backend_default" in Translations to drop...
22:23:23.329 [debug] Running translation for riak_kv.multi_backend
22:23:23.329 [debug] Running translation for eleveldb.delete_threshold
22:23:23.329 [debug] Running translation for eleveldb.tiered_slow_level
22:23:23.329 [debug] Applied Translations
 -config /Users/dkerrigan/src/basho/riak-2.1.1/data/generated.configs/app.2015.07.12.22.23.23.config -args_file /Users/dkerrigan/src/basho/riak-2.1.1/data/generated.configs/vm.2015.07.12.22.23.23.args -vm_args /Users/dkerrigan/src/basho/riak-2.1.1/data/generated.configs/vm.2015.07.12.22.23.23.args